Provided that the male partner of a female carrier does not himself have X-linked lymphoproliferative syndrome (XLP), a female child inheriting the alteration will also be a carrier like her mother and not show symptoms of X-linked lymphoproliferative syndrome (XLP).

This information could strengthen the conclusion that the SH2D1A alteration was linked to the diagnosis of X-linked lymphoproliferative syndrome (XLP) or XLP carrier state in the individual being tested.